Hydraulic press.



No. 774,154. YJPATBNTED NOV. 8, 1904.

. B. G. BUDD.

HYDRAULIC PRESS.

, APPLICATION FILED FEB. 26, 1902.

no MODEL. 1 mums-sham 1.

No. 774,154. PATENTED NOV. 8 1904.

E. G. BUDD.- HYDRAULIC PRESS.

APPLIOATION FILED FEB. 26. 1902.

N0 MODEL. 4 SHEETS- 81E121 A.

No. 774,154. I PATENTED NOV. 8. 1904.

E.G.BUDD.

HYDRAULIC PRESS.

APPLICATION FILED FEB. 26, 1902. no MODEL. unnmswnnnrs.

PATENTED NOV. 8, 1904;.

E. G. BUDD.

HYDRAULIC PRESS.

APPLIOATION FILED FEB. 26. 1902.

4 SHEETS-SHEET 4.

no MODEL.

IINITED STATES Patented November 8, 1904.

ATENT Orrrcn.

EDWARD GOWEN BUDD, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO THEAMERICAN PULLEY COMPANY, A CORPORATION OF PENN- SYLVANIA. 1

HYDRAULIC PRESS- SPECIFICATION forming part of Letters Patent No.774,154, dated November 8, 1904.

Application filed February 26, 1902. Serial No. 95,686. (No model.)

1'' 0 all whom, it may concern:

Be it known that I, EDWARD GowEN BUDD, of Philadelphia, county ofPhiladelphia, State of Pennsylvania, have invented an Improvement inHydraulic Presses, of which the following is a specification. v

My invention has reference to hydraulic presses; and it consists ofcertain improvements, all of which are fully set forth in the followingspecification and shown in the accompanying drawings, which form a partthereof.

The object of my invention is to provide a construction of hydraulicpress suitable for heavy worksuch, for example, as the manufacture offorged or pressed car-wheels-and" capable of having capacity forperforming the work in a speedy and accurate manner.

My object is, further, to so form the press that the upper and lowerdies are moved by separate hydraulic plungers arranged, respectively,above and below the work and also to simplify the structure bysupporting the blank or work upon a standard centrally located withrespect to the lower hydraulic cylinder and plunger, whereby there is noobstructing-support between the upper and lower hydraulic cylinders,thus simplifying the construction of the machine and greatly reducingthe height thereof, especially between the base and the work. 7

My object is also to provide such a press as above described withcheek-dies and hydraulic devices for radially operating them in theplane of the work and, further, in so connecting the several operativeportions for moving said cheek-dies that they are required to movesimultaneously to the same degree.

My object is, further, to provide in such a hydraulic press as abovespecified a rotatable support or mandrel for the work carried upon thecentral standard which extends upward through the lower hydraulicplunger, so that the work or blank may be rotated upon a vertical axisand be brought into successive positions between specific dies,respectively,upon the two plungers of the upper and lower hydrauliccylinders and also with respect to the cheek-dies.

My invention consists of certain improvements constructed in such manneras to secure the above objects and which are fully v set forthhereinafter and will be better understood by reference to the drawings,in which Figure 1 is a plan view of the entire machine. Fig. 2 is avertical section on line 2 2 of Fig. 1. Fig. 3 is a horizontal sectiontaken on the line 3 3 of Fig. 2 looking downward; and Fig. lzis avertical section of the lower part of the machine, taken on line A L ofFig. 3.

2 is the base-frame or bed-plate and may be formed in sections, if sodesired. The lower hydraulic cylinder 3 is bolted to this bed-plate andis provided with a central hub 4:, into which is secured anupwardly-extending standard 5 for carrying the work W. The plunger 7fits the cylinder 3 and is formed annular in shape, so as tosurround thestandard 5, while at the same time fitting down into annular space 6within the cylinder. The plunger 7 is packed at 11, where it fits thecylinder, and also at 12, where it fits the standard. A pipe 8 supplieswater under pressure to the cylinder or permits the Water to escape fromthe said cylinder, as required. To the top of the plunger 7 is securedthe platen 9, which carries the dies 22, of suitable construction,required for the work to be performed. The downward movement of theplaten and plunger is limited by the adjustable nuts 10 on thescrew-threaded studs 41.

The standard 5 at the top is provided with a mandrel 4:2, journaled init so as to rotate upon a vertical axis and upon which the work or blankW is placed. When the work is to be a disk of metal forforging, it isprovided with a tapered hole, into which the tapered mandrel fits. Themandrel may be removed with the work and driven out afterward in case itbecomes tightly held to the forging. In case the press is to be used forpressing or forming sheet metal then the mandrel will be substituted byany suitable supporting-die for holding the sheet-metal blanks," so thatthey may be acted upon not only by the upper and lower dies, but also bythe cheek-dies 29 in such manner, for example, as is shown in LettersPatent No. 630,449 to Corscaden, dated August 8, 1899.

14 represents four heavy upright bolts secured to the bed-plate 2 andsupporting an upper frame 13, on which is secured the upper hydrauliccylinder 15, which opens downward. These upright bolts are very heavyand strong, since they are required to sustain the entire tensile strainproduced by the action of the upper and lower dies. These bolts are,moreover, grouped in pairs, the bolts of each pair being nearer togetherthan are the bolts of the two pairs, so as to leave a wide space infront and back of the press for inserting and removing the work and formanipulating it.

The upper hydraulic cylinder 15 is provided with a plunger 16, workingthrough a packed joint 43 of suitable construction. Fitted to theplunger 16 is a platen 17, to which the upper dies 23 are secured. Thecylinder 15 is provided with a pipe 21, through which water underpressure may be admitted to or removed from it to operate the plunger.To cause this plunger and its platen to rise when the pressure isremoved from the cylinder 15,

I provide a pair of small cylinders 18, in which pistons 19 work, saidpistons being connected by rods with the platen 17. Water under pressureis supplied to these cylinders 18 to raise the platen 17, the plunger16, and the dies 23, carried by the platen. This waterpressure may besupplied by pipe 20 and may be on continually or only when the pressureis removed from the cylinder 15, as desired. Any other convenient modeof raising the plunger, platen, and dies may be used in place of thesmall hydraulic cylinders and pistons.

The dies 22 23, as shown, are in sections and segmental and adapted tooperate at one time upon a portion of the upper and lower surfaces ofthe blank WV only, the blank being turned from time to time to bring newportions of its surface into position 'for operation. i/Vhile I haveshown these dies in segmental shape, it is to be understood that I donot confine myself to any particular shape or form of dies. If the pressis used for other purposes than the making of wheels from a blank, it isevident that the dies would be changed accordingly. The preferred methodof forging wheels from solid blanks with the use of segmental dies isset out in my application, Serial No. 87,077, filed December 24, 1901,and the press of this application is excellently adapted for the saidmethod of manufacture.

Bolted to the bed-frame 2 are frames 24%, which carry plungers 26 foroperating the four cheek-dies 29. These cheek-dies are arrangedcircumferentially about and on a level with the mandrel 4:2 and work Wand are each curved in plan and of a length approximately equal toone-quarter of a circle. The operating-faces are shaped to suit therequired outer circumference or periphery of the blank or article. curedto a reciprocating frame 27, moving in guides 25 on the frame 24:, andare provided with a cylinder 28, which fits over the plunger 26 of saidframe 24. This plunger is stationary or fixed, while the cylinder ismovable; but it is evident that this relation may be reversed, if sodesired. Water is admitted to the cylinder through the plunger 26 bypipe 30 from any suitable source of supply. The frames 24 in addition tobeing bolted to the base-frame are bolted together by bolts 33. Thereare four of said frames and cheek-dies operating devices shown, andthese frames are braced by the four bolts 33, connected to the lugs 34on the frames, so that when the cheek-dies are forced in upon the workthe outward strains are counterbalanced, and excessive strain upon theconnection of the frames 2& with the base-frame 2 is obviated. In thismanner the great forging strains by the cheek-dies are taken up by thetensionbolts 33 and the frames 24, to which they are secured. In somecharacter of work the four cheek-dies are necessary and used; but inother cases, such as in the use of the segmental dies 22 23, only two ofthe cheek-dies would be required, and these would be upon sides inalinement with the dies 22 radially considered.

It is important to have all of the four frames 27 of the cheek-dies 29move in and out at the same speeds, so that the said cheek-dies shallsimultaneously act upon the metal, so as to press or forge it equally.This action 1 secure in the following manner:

Shafts 35 are journaled on the main or stationary portions of the pressand have crankarms 38 at top and 36 at the bottom. The lower crank-arms36 are respectively linked at 37 with one of the cheek-die frames 27.The top crank-arms 38 are each connected by a link 39 with a ring-frame40, journaled on the top of the cylinder 15 and free to revolve. By thisconnection between the four cheek-dies and their reciprocating framesthey must move at the same rates of speed under the action of thewater-pressure furnished from a common source of supply.

The cheek-dies and their frames are withdrawn when the pressure isremoved from the cylinders 28 by means of the small cylinders 31, havingthe pistons 32, said pistons being actuated by hydraulic pressuresimilarly to the action on the piston 18 in lifting the plunger 16 ofthe upper hydraulic cylinder 15. The water is supplied to thesecylinders 31 by pipes 14, leading from a suitable accumulator.

In cases where only two of the cheek-dies are required the other two maybe omitted and the reciprocating frames 27 allowed to move withoutperforming work, or said dies Each of these cheek-dies is seand theiroperating devices may be wholly omitted, if desired.

By the construction herein set out the height of the press is notexcessive. It is light in weight, is quick in operation, and it enablesthe introduction and removal of the work in an easy manner. 1

While I prefer the construction shown, I do not confine myself to thedetails of construction, as they may be modified in various ways withoutdeparting from the spirit of my invention.

Having now described my invention, what I claim as new, and desire tosecure by Letters Patent, is

1. In a hydraulic press, the combination of upper and lower platens forsupporting dies and hydraulic cylinders and plungers for operating themto and from each other, with radially-acting cheek-dies, deviceshydraulically operated for moving thecheek-dies, and connectingmechanism between the several cheekdies and frame of the hydrauliccylinders of the upper and lower platens for insuring their movement tobe toward each other and at the same speed, whereby they are caused toact upon the work at the same time in'the same manner, and accuratelycenter it between the dies of theupper and lower platens.

2. In a hydraulic press, the combination of upper and lower platens forsupporting dies and hydraulic cylinders and plungers for operating themto and from each other, with radially-acting cheek-dies, deviceshydraulically operated for moving the cheek-dies, connecting mechanismbetween the several cheek-dies for insuring their movement to be at thesame speed, whereby they are caused to act upon the work in the samemanner, said mechanism consisting of a frame pivoted above the hydrauliccylinder for the upper platen and linked to the several cheek-dies bycranked arms and in which the connections with the pivoted frame are toone side of its pivot substantially as set out.

3. In a hydraulic press, the combination of upper and lower platens forsupporting dies and hydraulic cylinders and plungers for operating themto and from each other, with radially-acting cheek-dies, deviceshydraulically operated for. moving the cheek-dies, rock-shaft and leverconnect-ions between the several cheek-dies supported by the framecarrying the hydraulic cylinders of the upper and lower platens wherebythe movement of any cheekdie insures a similar movement to the othercheek-dies and causes a simultaneous action upon the blank operated on.

4:. In a hydraulicpress, the combination of upper and lower platens forsupporting dies and hydraulic cylinders and plungers for operating themto and from each other, with radially-acting cheek-dies, deviceshydraulically operated .for moving the cheek-dies, lever connectionsbetween the several cheek-dies wherearms of the rock-shafts and thepivoted rockframe, whereby the rock-frame is so disposed as not tooccupy the space between the several hydraulic cylinders, and devicesfor operating the dies.

5. In a hydraulic press, the combination of upper and lower platens forsupporting dies and hydraulic cylinders and plungers for operating themto and from each other, with radially-acting cheek-dies, deviceshydraulically operated for moving the cheek-dies, secured to the lowerhydraulic cylinder, tension-bolts for holding the cheek-diehydraulic-power device against being spread or forced away from theWork.

6. In a hydraulic press, the combination of upper and lower platens forsupporting dies and hydraulic cylinders and plungers for operating themto and from each other, with radially-acting cheek-dies, deviceshydraulically operated for moving the cheek-dies, a central support forthe blank to be operated on arranged centrally of the cheek-dies andextending upward through the lower hydraulic plunger and cylinder.

7. In a hydraulic press, the combination of upper and lower platens forsupporting dies and hydraulic cylinders and plungers for operating themto and from each other, with radially-acting cheek-dies, deviceshydraulically operated for moving the cheek-dies, a central support forthe blank to be operated on arranged centrally of the cheek-dies andextending upward through the lower hydraulic plunger and cylinder andprovided with a ro-' tatable mandrel carried on its upper end to permitthe blank or Work to be rotated between the several dies.

8. In a hydraulic press, the combination of upper and lower platens forsupporting dies and hydraulic cylinders and plungers for operating themtoand from each other, with ra. dially-acting cheek-dies, deviceshydraulically operated for moving the cheek-dies, avcentral support forthe blank to be operated on arranged centrally of the cheek-dies and eX-tending upward through the lower hydraulic plunger and cylinder andprovidedwith a rotatable mandrel carried on its upper end to permit theblank to be rotated between the several dies, and segmental dies carriedby the upper and lower platens in alinement and between which differentportions of the blank may be successively brought in the act of forging.

9. In a hydraulic press, the combination of a base-frame, anupwardly-directed hydraulic cylinder having an upwardly-extendingstandard for carrying the work, a plunger fitting into said cylinder andsurrounding the standard and upper hydraul'ic-power devices above thestandard whereby the work may be operated from above and below bysuitable hydraulic-actuated dies while supported on its standard.

10. In a hydraulic press, the combination of a base-frame, anupwardly-directed hydraulic cylinder having an upwardly-extendingstandard for carrying the work, a plunger fitting into said cylinder andsurrounding the standard, a rotatable mandrel on the top of the standardfor directly carrying the work and permitting it to be rotated, andupper hydraulic power devices above the standard whereby the work may beoperated from above and below by suitable hydraulic-actuated dies whilesupported on the mandrel of the standard.

11. In ahydraulic press, the combination of a base-frame, a cylinder anddie-actuating plunger carried by the frame and working upwardly, astandard extending upward centrally through the plunger and carried bythe cylinder, an upper frame, supported from the lower frame bytie-bolts, a downwardly-directed hydraulic cylinder carried by the upperframe, areciprocating die-actuating plunger for said downwardly-directedhydraulic cylinder, and radially-acting hydraulic cheekdie mechanismarranged about the standard and supported by the base-frame.

12. In a hydraulic press, the combination of a base-frame, a cylinderand die-actuating plunger carried by the frame and working upwardly, astandard extending upward centrail y through the plunger and carried bythe cylinder, an upper frame supported from the lower frame bytie-bolts, a downwardly-directed hydraulic cylinder carried by the upperframe, a reciprocating die-actuating plunger for saiddownwardly-directed hydraulic cylinder, radially-acting hydrauliccheek-die mechanism arranged about the standard and supported by thebase-frame, and tensionbolts for holding the cheek-die mechanism inposition and preventing excessive strain on its connections with thebase-frame.

In testimony of which invention I have hereunto set my hand.

EDWARD GOVVEN BUDD. l/Vitnesses:

CHARLES E. BIMLEY, ALEX. R. OHns'roN.

